MIMIC-IV on FHIR

Fast Healthcare Interoperability Resources (FHIR) has emerged as a robust
standard for healthcare data exchange. To explore the use of FHIR for the
process of data harmonization, we converted the Medical Information Mart for
Intensive Care IV (MIMIC-IV) and MIMIC-IV Emergency Department (MIMIC-IV-ED)
databases into FHIR. We extended base FHIR to encode information in MIMIC-IV
and aimed to retain the data in FHIR with minimal additional processing,
aligning to US Core v4.0.0 where possible. A total of 24 profiles were created
for MIMIC-IV data, and an additional 6 profiles were created for MIMIC-IV-ED
data. Code systems and value sets were created from MIMIC terminology. We hope
MIMIC-IV in FHIR provides a useful restructuring of the data to support
applications around data harmonization, interoperability, and other areas of
research.